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'use strict';
const common = require('../common.js');
const assert = require('assert');
const bench = common.createBenchmark(main, {
method: ['apply', 'spread', 'call-spread'],
count: [5, 10, 20],
context: ['context', 'null'],
rest: [0, 1],
n: [5e6]
});
function makeTest(count, rest) {
if (rest) {
return function test(...args) {
assert.strictEqual(count, args.length);
};
} else {
return function test() {
assert.strictEqual(count, arguments.length);
};
}
}
function main({ n, context, count, rest, method }) {
const ctx = context === 'context' ? {} : null;
var fn = makeTest(count, rest);
const args = new Array(count);
var i;
for (i = 0; i < count; i++)
args[i] = i;
switch (method) {
case '':
// Empty string falls through to next line as default, mostly for tests.
case 'apply':
bench.start();
for (i = 0; i < n; i++)
fn.apply(ctx, args);
bench.end(n);
break;
case 'spread':
if (ctx !== null)
fn = fn.bind(ctx);
bench.start();
for (i = 0; i < n; i++)
fn(...args);
bench.end(n);
break;
case 'call-spread':
bench.start();
for (i = 0; i < n; i++)
fn.call(ctx, ...args);
bench.end(n);
break;
default:
throw new Error(`Unexpected method "${method}"`);
}
}